pytest-dev/pyfakefs
Provides a fake file system that mocks the Python file system modules.
Is pytest-dev/pyfakefs beginner-friendly?
The maintainers of pytest-dev/pyfakefs usually reply to a pull request within 2 days. No beginner-friendly issue is open right now; the list below has the other issues we hold for it.
- Stars
- 756
- Forks
- 111
- Open beginner issues
- 0
- Indexed issues
- 18
- Avg merge
- 3d 21h
- Merged PRs (30d)
- 10
- Dominant language
- Python
- License
- Apache-2.0
- Last GitHub push
- Oct 28, 2026
- Latest indexed
- Sep 19, 2026
- Contributing guide
- Contributing guide
- Code of conduct
- No code of conduct
- Beginner labels
- No beginner labels indexed
How to contribute to pytest-dev/pyfakefs
- Read the contributing guide first: it says how the maintainers want changes proposed, tested and reviewed.
- It ships a Dockerfile or Docker Compose file, so you can run it without installing its whole toolchain.
- Your contributions will be published under the project's Apache-2.0 license.
- Follow the repository to hear when a new beginner-friendly issue opens, or look through the other issues below.
Issues somebody may already be working on are listed last. List everything by date
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Difficulty 2/5 1-3 hours Newbie friendliness 72/100
pytest-dev/pyfakefs#1367 · 1 comment ·
Maintainers usually reply within 2 days
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Real Path objects keep a lowercased _str_normcase after a fake filesystem session on Python 3.14Open
Difficulty 3/5 1-2 days Newbie friendliness 58/100
pytest-dev/pyfakefs#1359 · 1 comment ·
Maintainers usually reply within 2 days
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Difficulty 5/5 Over a week Newbie friendliness 35/100
pytest-dev/pyfakefs#1321 · 4 comments ·
Maintainers usually reply within 2 days
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fake_filesystem: RuntimeError "dictionary changed size during iteration" under concurrent mkdirOpen
Difficulty 3/5 1-2 days Newbie friendliness 65/100
pytest-dev/pyfakefs#1319 · 1 comment ·
Maintainers usually reply within 2 days
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Difficulty 3/5 1-2 days Newbie friendliness 45/100
pytest-dev/pyfakefs#1191 · 1 reaction ·
Maintainers usually reply within 2 days
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 25/100
pytest-dev/pyfakefs#1184 · 2 comments ·
Maintainers usually reply within 2 days
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problem with `os.stat` within `eyed3.load` when running multiple tests using `fs` based fixtureOpenlimitation
Difficulty 4/5 3-5 days Newbie friendliness 35/100
pytest-dev/pyfakefs#1105 · 23 comments ·
Maintainers usually reply within 2 days
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 35/100
pytest-dev/pyfakefs#1089 · 2 comments · 1 reaction ·
Maintainers usually reply within 2 days
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 35/100
pytest-dev/pyfakefs#999 · 4 comments · 1 reaction ·
Maintainers usually reply within 2 days
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fnmatch.filter and glob don't match uppercase names under Windows simulationPossibly taken @sricharanreddycheruku claimed this 26 days ago. Open
Difficulty 3/5 1-2 days Newbie friendliness 68/100
pytest-dev/pyfakefs#1345 · 4 comments ·
Maintainers usually reply within 2 days
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`Path` is replaced with `FakePathlibPathModule` instead of `FakePath` when imported directlyPossibly taken @sunxiuguo claimed this 18 days ago. Open
Difficulty 3/5 1-2 days Newbie friendliness 70/100
pytest-dev/pyfakefs#1334 · 1 comment ·
Maintainers usually reply within 2 days
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`FakeOsModule.use_original` is not thread-safe under `asyncio.to_thread` workloadsPossibly taken @jfindlay claimed this 194 days ago. Open
Difficulty 4/5 3-5 days Newbie friendliness 48/100
pytest-dev/pyfakefs#1317 · 6 comments ·
Maintainers usually reply within 2 days